I want to create a profile terminal that executes this command rvm use 1.9.2 and leave me in the prompt after choosing my ruby version.

user@user-desktop:~/Sites/RailsApp$ rvm use 1.9.2  

Using /home/user/.rvm/gems/ruby-1.9.2-p290

I've tried to put in "Run a custom command instead of my shell Custom command" like I saw here but this doesn't work:

bash -l -c "rvm use 1.9.2"

Thanks in advance.